played three-time champion Serena Williams 6-2, 6-3 to win the US Open Sunday, claiming the first Grand Slam title of her career in a stormy final. Stosur kept her composure as Williams erupted in anger at the chair umpire in the second set, dominating the 13-time Grand Slam champion who had reached the final without dropping a set. She became the first Australian woman to take the title in New York since Margaret Court in 1973, and the first to win a Grand Slam since Evonne Goolagong won Wimbledon in 1980. “I had one of my best days and I'm very fortunate that I had it on this stage in New York,” Stosur said. “Ever since I started playing it was a dream of mine to be here one day.” Williams arrived in the final after dismantling world No. 1 Caroline Wozniacki in the semifinals Saturday night in a match that dragged toward midnight. “I was more tired than I expected,” Williams said. “But I want to give all credit to Sam today ... She played really, really well. That's what you have to do when you play a Grand Slam final.” Stosur, playing her second career Grand Slam final after a runner-up finish in the French Open last year, quickly claimed the opening set, breaking Williams to lead 2-1 and winning the last 12 points of the set as Williams' frustration grew. Williams, whose powerful serve is a cornerstone of her game, struggled to get her first serves in and Stosur repeatedly made her pay. “She was cracking ‘em today,” Williams said of the Australian, who was still rolling in the opening game of the second frame when she gave herself a double break point with a crushing return of serve. Williams saved one with an ace, and appeared to save another for deuce. But the American's shout of “c'mon” as soon as she unleashed her forehand came before Stosur reached the ball, and umpire Eva Asderaki immediately penalized Williams for “intentional hindrance” and the point and the game went to Stosur. The scene recalled Williams' similar meltdown in her 2009 semifinal defeat to Kim Clijsters. In that match, she unleashed a tirade of abuse at a lineswoman who called a foot-fault during the tense match and a penalty point sealed her fate in a 6-4, 7-5 defeat. This time an angry Williams – backed by a suddenly energized crowd on the 22,000-seat Arthur Ashe Stadium – immediately stepped up her game, breaking Stosur for 1-1 and holding to edge ahead 2-1. Stosur remained aloof from the dispute, but admitted the crowd response was intimidating. “It was probably the loudest I ever felt a crowd in my whole entire life,” she siad. “You're right in the middle of it. It was definitely a quite overwhelming feeling. But once I hit that next ball in the court and started playing again, I felt settled.” Williams continued to berate Asderaki on the changeover, but Stosur stayed calm and saved two break points in the fourth game to level the set at 2-2. Stosur said she didn't really know just what was happening between Williams and the umpire. “I was just kind of there,” Stosur said. “I do know the rule, but it's not something I've ever had to deal with before.” The American pair of Liezel Huber and Lisa Raymond won the women's doubles title with a 4-6, 7-6, 7-6 victory over defending champions Vania King of the US and Kazakhstan's Yaroslava Shvedova. Oliver Golding of Britain and American Grace Min both toppled top seeds to win the boys' and girls' singles finals. Golding battled back to beat top-seeded Jiri Vesely of the Czech Republic 5-7, 6-3, 6-4. Unseeded Min, who won the Wimbledon junior doubles title in July, upset top seed Caroline Garcia of France 7-5, 7-6 in the girls' title match.